How to Merge Black Holes
The core merge mechanic explained - how to combine holes, how power scales, and how to merge efficiently.
Overview
Merging is the core loop of Merge a Black Hole: simply drag two identical holes together to combine them into the next, stronger tier. Each merge roughly doubles power, which is exactly how you climb the full tier list all the way toward the mighty Omega Hole.
How to Merge Step by Step
The basic merge action, broken down into simple, repeatable steps that anyone can follow easily.
Merging itself is intuitive, but mastering exactly when to merge matters just as much as knowing how to do it.
Late game, auto-merge handles the repetitive part of the loop so you can focus on the bigger cash and upgrade decisions.
Spawn Identical Holes
Collect sparkles around your base or use spawn to deliberately create two holes of the exact same tier.
Drag One Onto the Other
Click and drag one hole directly onto its identical twin to instantly combine them into the next, stronger tier.
Repeat Up the Chain
Keep merging identical pairs over and over again to steadily climb toward the powerful late tiers.
Automate with Auto-Merge
Enable auto-merge to combine identical holes automatically, without any manual dragging at all.
How Power Scales with Merging
Every merge roughly doubles the power of the resulting hole. That exponential scaling is exactly why a single Omega Hole vastly outclasses dozens of lower-tier holes combined into one.
Higher power means more passive cash per second and significantly more damage when attacking the Sun or raiding rival players' bases.
This compounding effect is the core reason veteran players focus on climbing tiers rather than hoarding many weak holes that just eat up your valuable slots.
Ways to Merge Faster
Three upgrades and tools that speed up merging significantly and reduce manual effort.
Each one removes a different bottleneck in the overall merge loop, so stack them together for the very best results.
Together they turn a slow manual grind into a smooth, near-automatic progression engine that runs while you focus elsewhere.
More Slots
Upgrade your slots to hold more holes at once, so you always have matching pairs readily available to merge.
Higher Spawn Tier
Raise your spawn tier so new holes appear above level 1 and skip the slow, tedious low-level merges.
Auto-Merge
Use auto-merge to combine identical holes automatically while you focus on upgrades and base defense.
Merge Bottlenecks and Solutions
Common reasons merging slows down, paired with exactly how to fix each one.
Identifying your current bottleneck is the single fastest way to speed up your overall progression.
Most players hit one of these four walls at some point, so check the list whenever merging starts to feel sluggish.
| Bottleneck | Solution |
|---|---|
| Not enough matching pairs | Upgrade slots and spawn tier |
| Holes spawn at level 1 | Raise your spawn tier |
| Manual dragging is too slow | Enable auto-merge |
| No cash for upgrades | Improve your passive income |
Merge Tips
Quick habits that make merging noticeably smoother and faster over a long play session.
These small optimizations add up quickly, especially once you reach the mid and late tiers where every single merge matters a lot more.
- Redeem codes regularly for free cash to fund your early merges and important upgrades.
- Keep your base shield active while merging to avoid any surprise raids on your holes.
- Prioritize spawn tier upgrades over chasing high tiers far too quickly and early.
- Stack a 2x cash boost during active merge sessions for big compounded gains.
- Save your slots budget for meaningful tier jumps rather than filling up with low holes.
Frequently Asked Questions
How do I merge black holes?
Does merging always double power?
Can I automate merging?
Why can't I merge my holes?
What is spawn tier and why does it matter?
Should I merge or keep holes separate?
Related Guides
All Black Holes Tier List
The complete merge chain running from the Micro Hole all the way to the Omega Hole.
Spawn Cap and Spawn Tier
Control exactly how many holes exist and at what starting level they appear.
Auto-Merge
Automate the entire merge loop to save time and effort during long sessions.